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Two green 240-pin DDR3L ECC registered DIMMs in antistatic packaging

OWC

OWC 32GB (2x16GB) DDR3L 1600 ECC RDIMM Kit 1R6T32R4032P

SKU CH-JR35-RQ9BF

32 GB kit of DDR3L 1600 ECC registered memory for Lenovo System x servers

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR3L 1600 (PC3L 12800)
  • CAS latencyCL11
  • Rated voltage1.35 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 32GB (2 x 16GB)

  • ECC registered design protects data integrity in servers
  • 32 GB kit (2×16 GB) expands Lenovo System x3650 M4 capacity
  • DDR3L 1600 CL11 at 1.35 V lowers power draw
  • 240-pin RDIMM fits x3650 M4 BD, HD, x3750 M4, x3755 M3
  • Replaces Lenovo part numbers 0C19535, 46W0671, 46W0672

Server ECC RDIMM Kit

This OWC kit supplies 32GB of DDR3L ECC registered memory in a matched pair of 16GB modules. It is built for Lenovo System x3650 M4, x3650 M4 BD, x3650 M4 HD, x3750 M4 and x3755 M3 servers. Standard desktop PCs and unbuffered memory configurations are not supported.

Registered 2Rx4 at 1600 MT/s

The decisive specification is the registered 2Rx4 organisation running at DDR3L 1600 (PC3L-12800) with CL11 latency. Only systems that accept registered ECC RDIMMs of this exact rank and speed will post correctly; mixing with unbuffered DIMMs will prevent operation.

Low-voltage thermal profile

Operating at 1.35V, the modules draw less power and generate less heat than standard 1.5V DDR3, helping server fans run at lower speeds. No heat spreaders are fitted, so airflow across the DIMM slots remains the primary cooling path.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $89.99
Cheaper than about 69% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $2.81 per GB
Cheaper than about 91% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number1R6T32R4032P
Total capacity32 GB (2 × 16 GB)
Product type240-Pin DDR3L ECC RDIMM
Performance
Rated speedDDR3L 1600 (PC3L 12800)
Memory
CAS latencyCL11
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.35 V
Compatibility
Compatible systemsLenovo System x3650 M4
Lenovo System x3650 M4 BD
Lenovo System x3650 M4 HD
Lenovo System x3750 M4
Lenovo System x3755 M3

Other versions of this model

5 more in the same range

Questions about this item

What does the 1600 MHz rating mean once the kit is installed in a Lenovo System x3650 M4?

The modules run at DDR3L 1600 (PC3L-12800) with CL11 latency, delivering the rated throughput when the server's memory controller is configured for that speed.

How does the 240-pin DDR3L ECC Registered interface limit what the kit can do in practice?

The registered design adds a clock cycle for stability, requires a server chipset that supports ECC RDIMMs, and cannot be mixed with unbuffered DIMMs.

What physical space and slot layout does the 2x16 GB kit need to fit in the compatible Lenovo servers?

Each module is a standard 240-pin DDR3L RDIMM; the kit occupies two DIMM slots and follows the server's population rules for 2Rx4 registered memory.

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